Did you find or received COSMO file and your computer failed to open it? Below we will explain what is COSMO file extension and how you can open it.

What is a COSMO file ext?

COSMO is a file extension associated with file in Apple II .

How to open a COSMO file?

In most cases your computer should know what software program should be used to open different file types and extensions like COSMO. When you double click on the COSMO file format, it should open with appropriate software program. If you downloaded or received COSMO files for the first time and your system failed to open it then try free file viewers available on the internet after doing enough research not to fall prey to malware.

How to fix errors with COSMO files

Scan the file
Before trying to open COSMO files on your Windows make sure that it is safe to do so by running through antivirus scanner.
Update
Unable to open COSMO files with the associated software program or see an error than try updating the associated software
Do not
If none of the applications in your Windows were able to open COSMO file do not change file extension because by changing file extension you are corrupting the file. In case you already changed the extension you can revert it back to COSMO by renaming the file. Incorrect associations are the cause of many COSMO file errors.

Finally, if Windows is unable to open file extension COSMO you may have registry related errors or may not have the appropriate program installed. We strongly recommend that you run a registry scan.

You are currently viewing the detail page for COSMO file ext. This page contains a detailed description of the COSMO file type, software tools to help resolve file association errors in the Windows registry together with relevant system utility applications and other related information.